Lenze E82xVxxxKxxxxx - Manual (Page 502)

Application examples
Pressure control
15
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502 EDS82EV903 EN 3.0
15 Application examples
15.1 Pressure control
The following examples show a simple pressure control with the 8200 vector frequency
inverter or 8200 motec using the internal process controller.
The setpoint can either be defined in a fixed way via the code C0181 (example 1) or variably
with the motor potentiometer function (example 2).
Application example
A centrifugal pump (quadratic load characteristic) is to maintain constant pressure in a
pipeline system (e.g. water supply for private households or industrial plants).
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Note!
ƒ For this example, the controller must be equipped with a standard I/O since
an analog input for the actual pressure value is required.
ƒ If you want to select the pressure setpoint via an analog source, you need an
application I/O since two analog inputs are required. This variant will not be
considered in the following.